Related by context. Frequent words. (Click for all words.) 58 seagrasses 58 planktonic 57 toxic algae blooms 57 marine organisms 56 aquatic habitats 55 terrestrial ecosystems 55 aquatic species 55 species 55 overfishing pollution 54 biota 54 marine ecosystems 54 eelgrass 54 marine invertebrates 54 aquatic ecosystems 53 freshwater ecosystems 53 coastal ecosystems 53 aquatic organisms 53 organisms 53 salinity 53 benthic 53 marine ecosystem 53 ocean acidity 53 ecosystems 53 ecologies 52 copepods 52 Cyanobacteria 52 eel grass 52 microscopic algae 52 seagrass beds 52 ocean ecosystems 52 aquatic ecosystem 52 harmful algal blooms 52 sea urchins 52 molluscs 51 sea squirts 51 habitats 51 acidification 51 underwater grasses 51 freshwater mussels 51 diatoms 51 corals 51 dissolved oxygen levels 50 reefs 50 tidal marshes 50 habitat fragmentation 50 salmonids 50 aquatic insects 50 microscopic organisms 50 filter feeders 50 amphibian populations 50 estuaries 50 algal blooms 50 waterbirds 50 estuarine 49 coral reef ecosystems 49 alga 49 oxygen depletion 49 marbled murrelet 49 keystone species 49 trophic 49 brine shrimp 49 symbionts 49 intertidal 49 guillemots 49 Daphnia 49 phytoplankton 49 bee populations 49 cyanobacteria 49 grassland birds 49 diatom 49 invertebrates 49 algal bloom 49 kelp forests 49 vertebrate species 49 protozoa 49 nutrient loading 49 longfin smelt 49 coral reefs 49 avian species 49 habitat 49 larval stage 48 foraminifera 48 tidal pools 48 gobies 48 ecological 48 insect populations 48 petrels 48 threadfin shad 48 retreating glaciers 48 mussels 48 habitat degradation 48 plankton 48 gharials 48 anadromous fish 48 pelagic fish 48 tadpoles 48 overexploitation 48 biosphere 48 dinoflagellates 48 biodiversity 48 aquatic creatures